$OpenBSD: patch-src_Shaders_postFX_cpp,v 1.1 2016/09/01 16:50:56 pascal Exp $
--- src/Shaders/postFX.cpp.orig	Wed Aug 31 17:44:56 2016
+++ src/Shaders/postFX.cpp	Wed Aug 31 17:45:26 2016
@@ -25,6 +25,7 @@ this program.  If not, see <http://www.gnu.org/license
 # include "defines.hpp"
 
 # include <SFML/OpenGL.hpp>
+# include <GL/glu.h>
 # include <iostream>
 
 namespace postFX {
